Weight Regain
Putting weight back on after losing it — driven by hormonal and metabolic defences that make maintenance hard; why ongoing support matters.
Plain English
Patient-Friendly Explanation
Weight regain means putting weight back on after losing it, and it happens to most people without ongoing treatment or support. The body defends its higher weight with stronger hunger signals, hormonal changes and a slower metabolism that push weight back up. This is a biological response, not a failure of willpower — which is why lasting results need an ongoing maintenance plan.
Medical
Clinical Definition
Weight regain after intentional weight loss is the physiological norm rather than the exception, driven by coordinated counter-regulatory adaptations. These include reductions in total energy expenditure beyond what changes in body composition predict (adaptive thermogenesis), increased orexigenic signalling (ghrelin, GIP) with falls in anorexigenic hormones (GLP-1, PYY, leptin), enhanced hedonic food-cue reactivity and gradual erosion of dietary restraint. Longitudinal studies of lifestyle interventions show an average regain of one- to two-thirds of lost weight within one to two years without structured maintenance strategies, whereas pharmacotherapy and bariatric surgery achieve better long-term outcomes in part because they sustain the biological signal changes needed to defend a lower body weight.
Key Insight
Why It Matters
If you have regained weight, you are fighting biology, not lacking discipline. Dr Joseph Wang's maintenance plans — regular follow-up, ongoing medication review and lifestyle support — are designed specifically around preventing regain.
Sources
Reviewed against standard medical references.
Medically reviewed by
Family Physician & Registered Acupuncturist, Accord Medical Clinic. MBBS (NUS), Graduate Diploma in Family Medicine (NUS), Graduate Diploma in Acupuncture (Singapore College of TCM).
Last reviewed: September 2026
This page is general health education, not medical advice. Whether any treatment is appropriate for you is a decision made in consultation after assessment.
